thank you! Thats some neat stuff . Should be able to sight in quicker.There is a great video from Panteao Production where Travis Haley explains in detail drop rate and combat effective zones. Think copyright claims snatched it up, but if your google-fu is strong...
i use a 36yd BZO that carries me to accuracy out to 500yds with iron sights. Google the 36yd BZO for details.
Flippers it is - magpulOP are you using a carry handle type of rear? Many of those have an elevation drum for estimates of bullet drop out to 500 yards or so. I sort of assumed a flip up type BUIS which is popular right now.
Flippers it is - magpul